To optimize accuracy and to keep the beauty of their receivers intact, Henry Cantilever Scope Mounts are mounted to the barrel. Golden Boys and Big Boys now come pre-drilled and tapped. You simply tap out the rear sight and it will reveal two holes that are drilled and tapped for easy screw in scope mount installation. The Henry Cantilever Scope Mounts accepts Weaver type detachable 1″ top mount rings.